A kind of high thermal conductivity modified plastic and its preparation method
A high thermal conductivity, plastic technology, applied in the field of polymer materials, can solve the problems of uneven distribution, unsuitable for industrial production, large consumption of carbon black, etc., to achieve the effect of simple preparation, suitable for industrial production, and low cost
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Embodiment 1
[0036] The weight percentage components of high thermal conductivity modified plastics are: magnesia powder 32%, flake boron nitride 32%, nylon 16%, nylon 6616%, maleic anhydride graft compatibilizer 1%, dispersant 3%;
[0037] The preparation method of embodiment 1 is:
[0038] a. First mix magnesium oxide powder and flake boron nitride to form a thermally conductive filler mixture, then add the mixture of aniline monomer, water and hydrochloric acid in a volume ratio of 1:15:1, and then add aniline monomer and other substances in batches A certain amount of initiator was reacted for 28 hours, and a thin layer of polyaniline was coated on the surface of the thermally conductive filler mixture to obtain a thermally conductive additive, wherein the mass ratio of aniline monomer to the thermally conductive filler mixture was 1:10;
[0039] b. Blend the heat-conducting additive with the main plastic, coupling agent and dispersant, add it to the feeder of the twin-screw extruder, ...
Embodiment 2
[0041] The weight percentage components of high thermal conductivity modified plastics are: 48% of alumina fiber, 18% of flake boron nitride, 16% of polypropylene, 12% of polyethylene, 2% of silane coupling agent, and 4% of dispersant;
[0042] The preparation method of embodiment 2 is:
[0043] a. First mix alumina fiber and flake boron nitride to form a thermally conductive filler mixture, then add the mixture of pyrrole monomer, water and sulfuric acid at a volume ratio of 1:15:1, and then add pyrrole monomer and other substances in batches A large amount of initiator was reacted for 26 hours, and a thin layer of polypyrrole was coated on the surface of the thermally conductive filler mixture to obtain a thermally conductive additive, wherein the mass ratio of the pyrrole monomer to the thermally conductive filler mixture was 1:3;
[0044] b. Blend the heat-conducting additive with the main plastic, coupling agent and dispersant, add it to the feeder of the twin-screw extru...
Embodiment 3
[0046]The weight percentage components of high thermal conductivity modified plastics are: alumina fiber 30%, magnesium oxide powder 20%, polyethylene terephthalate 15%, polypropylene 16%, polyethylene 12%, aluminate 2 %, dispersant 5%;
[0047] The preparation method of embodiment 3 is:
[0048] a. First mix alumina fiber and magnesium oxide powder to form a thermally conductive filler mixture, then add the mixture of thiophene monomer, water and hydrochloric acid in a volume ratio of 1:15:1, and then add the amount of thiophene monomer and other substances in batches The initiator was reacted for 30 hours, and a thin layer of polythiophene was coated on the surface of the thermally conductive filler mixture to obtain a thermally conductive additive, wherein the mass ratio of thiophene monomer to the thermally conductive filler mixture was 1:5;
[0049] b. Blend the heat-conducting additive with the main plastic, coupling agent and dispersant, add it to the feeder of the twi...
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